TL 5000 Set for acid-base titrations, scope of delivery: TL 5000/50 M 1, with pH-combination electrode A 7780 NTC30 DIN N , pH-buffer set L 4895, USB-keyboard TZ 3838, USB-HUB TZ 3830, USB-Stick TZ 3836 and 1 L amber reagent bottle TZ 3803 1 * 1 items